An implantable microporous ePTFE tubular vascular graft exhibits long term patency, superior radial tensile strength and suture hole elongation resistance. The graft includes a first ePTFE tube and a second ePTFE tube circumferentially disposed over the first tube. The first ePTFE tube exhibits a porosity...http://www.google.ca/patents/US6036724?utm_source=gb-gplus-sharePatent US6036724 - PTFE vascular graft and method of manufacture
